BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 VOL. 27, PP. 263-294, PL. 13 JUNE 1, 1916 



GLACIATION IN 'THE WHITE MOUNTAINS OF NEW 

 HAMPSHIRE * 



BY JAMES WALTER GOLDTHWAIT 



(Presented before the Society December 29, 1915) 



CONTENTS 



Page 



Introduction 263 



Glaciation related to the Bethlehem moraine 264 



Questions raised by reports of earlier observers 264 



Topography of the moraine 271 



Structure of the moraine 272 



Trend of the moraine 273 



Sources of the drift in the moraine 274 



Absence of cirques at the source 276 



Conclusions from evidence in the Bethlehem district 277 



Carroll moraine field and outwash plains 278 



General description 278 



Two opposed views of the origin of the outwash deposits 279 



Evidence of a southward movement of outwash 280 



Dispersion of boulders near the Twin Mountain House 282 



Conclusions drawn from the glacial features of the Carroll district. . . 283 



Relation of the Carroll moraine field to the Bethlehem moraine 284 



Ammonoosuc glacier 284 



Discussion of evidence presented by earlier observers 284 



Conclusions regarding local glaciation in the Ammonoosuc Valley .... 289 



Limited occurrence of cirques in the White Mountains 290 



Conclusion 293 



Introduction 



Three years ago I undertook a study of evidences of glaciation, both 

 by ice-sheet and valley glaciers, in the White Mountains of New Hamp- 

 shire. The observations of that season were directed mainly to cirque 

 development in the "gulfs" or "ravines" around Mount Washington and 

 to the proofs of regional glaciation on the highest peaks. An unexpected 

 result of this study was the discovery that most, if not all, of the local 



1 Manuscript received by the Secretary of the Society March 1, 1916. 



XX — Boll. Geol. Soc. Am., Vol. 27, 1915 (263) 



